--- wikisrc/amazon_ec2/first_steps.mdwn 2011/03/13 03:21:34 1.2
+++ wikisrc/amazon_ec2/first_steps.mdwn 2013/02/05 12:31:33 1.3
@@ -61,7 +61,7 @@ Package depends on Java, so build will t
Before starting to play with EC2, you need to be familiar with the EC2 vocabulary used throughout this tutorial.
-Briefly said, EC2 uses [Xen](http://www.xen.org) as virtualization solution. So, in essence, all operating systems that support Xen para-virtualization can theoretically run inside EC2, as a domU. This is the case for NetBSD; however, please note that only amd64 is currently supported. Work is on-going to support 32 bits for EC2.
+Briefly said, EC2 uses [Xen](http://www.xen.org) as virtualization solution. So all operating systems that support Xen para-virtualization can theoretically run inside EC2 as a domU, and NetBSD is one of them.
All operating systems are run as *instances*, which are, as their name implies, the instantiation of a specific AMI, or *Amazon Machine Image*. An AMI is an image built from specific *snapshots* of *volumes*. The volumes are part of [Elastic Block Storage](http://aws.amazon.com/ebs/) (or EBS for short), which is another service offered by AWS, distinct from EC2.